3 years ago

Look at the picture to answer please!! Need help asp :))

1 answer:

3 0

for a clear understanding of how closely they are related, scientists compare their DNA, an essential molecule that's the instruction manual for building each species. Humans and chimps share a surprising 99 percent of their DNA.

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2: protons and neutrons

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Frequency =6.75×10^14s^{-1}

$\\ \sf\longmapsto \lambda=\dfrac{c}{v}$

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3 years ago

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If 6.00 g of the unknown compound contained 0.200 mol of C and 0.400 mol of H, how many moles of oxygen, O, were in the sample?

Arada [10]

Convert moles to mass.

mass C = 0.2 mol * 12 g / mol = 2.4 g

mass H = 0.4 mol * 1 g / mol = 0.4 g

So mass left for O = 6 g – (2.4 g + 0.4 g) = 3.2 g

Calculating for moles O given mass:

moles O = 3.2 g / (16 g / mol) = 0.2 moles

Answer:

<span>0.2 moles O</span>

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4 years ago

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